8697389 has 2 divisors, whose sum is σ = 8697390. Its totient is φ = 8697388.

The previous prime is 8697379. The next prime is 8697407. The reversal of 8697389 is 9837968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8655364 + 42025 = 2942^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 8697389 - 2⁸ = 8697133 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8697379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4348694 + 4348695.

It is an arithmetic number, because the mean of its divisors is an integer number (4348695).

Almost surely, 2^8697389 is an apocalyptic number.

It is an amenable number.

8697389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8697389 is an equidigital number, since it uses as much as digits as its factorization.

8697389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 8697389 is about 2949.1336015854. The cubic root of 8697389 is about 205.6504345807.

The spelling of 8697389 in words is "eight million, six hundred ninety-seven thousand, three hundred eighty-nine".